The following are the major changes:
- Addition: Taiga Flycatcher: – A single bird first reported at Singapore Botanical Gardens on 1 December 2019 represent the first confirmed record for this very rare vagrant.
- Replacement: Japanese Tit – The Japanese Tit replaces the misidentified Cinereous Tit from the previous record and sighting at Tuas South. Further sightings of 2 birds at Pasir Ris Park also on 1 December 2019, together with past sighting of this species at Chinese Garden on October 2011 further support its inclusion into the list.
- Taxonomic change: Eurasian Whimbrel – Whimbrel is now split into Eurasian Whimbrel and Hudsonian Whimbrel, and Eurasian Whimbrel is the expected species in the region.
- Taxonomic change: Black Bittern‘s scientific name changed to Ixobrychus flavicollis.
- Taxonomic change: Green Broadbill‘s family name changed to Calyptomenidae.
The sightings of the Blue Whistling Thrush at Fort Canning Park on 7 December 2019, and the White-cheeked Starling at Picadilly, Seletar on 16 January 2020 has been noted. No decision has been made on their inclusion into the list at present.